US Bridges

Keith Rd. over Trib to Buchanan by

Good

Caddo Parish, Louisiana · 0.6 MI S of LA 525 · Structure no. 040900000000278

Built
2024
1 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
40
2019 count
Owner
County
County Highway Agency

About this bridge

Keith Rd. over Trib to Buchanan by is a concrete culvert carrying Keith Rd. over Trib to Buchanan by in Caddo Parish, Louisiana. It was built in 2024, so it is 1 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, projected to reach 44 by 2039. The structure is 30 ft (9.1 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKeith Rd.
CrossesTrib to Buchanan by
Location0.6 MI S of LA 525
RouteCounty Highway 0
Coordinates32.35091, -93.86183
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadGreater than HL 93
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width40 ft (12.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2019)
Projected traffic44 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Keith Rd. over Trib to Buchanan by built?

It was built in 2024, making it 1 years old in 2025.

What condition is Keith Rd. over Trib to Buchanan by in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Keith Rd. over Trib to Buchanan by carry?

About 40 vehicles per day (2019 count).

How long is Keith Rd. over Trib to Buchanan by?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m) and a deck 40 ft wide.

Who owns Keith Rd. over Trib to Buchanan by?

It is owned by the County Highway Agency.